./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:00:21,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:00:21,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:00:21,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:00:21,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:00:21,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:00:21,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:00:21,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:00:21,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:00:21,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:00:21,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:00:21,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:00:21,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:00:21,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:00:21,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:00:21,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:00:21,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:00:21,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:00:21,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:00:21,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:00:21,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:00:21,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:00:21,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:00:21,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:00:21,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:00:21,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:00:21,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:00:21,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:00:21,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:00:21,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:00:21,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:00:21,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:00:21,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:00:21,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:00:21,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:00:21,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:00:21,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:00:21,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:00:21,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:00:21,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:00:21,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:00:21,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:00:21,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:00:21,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:00:21,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:00:21,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:00:21,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:00:21,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:00:21,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:00:21,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:00:21,671 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:00:21,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:00:21,673 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:00:21,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:00:21,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:00:21,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:00:21,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:00:21,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:00:21,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:00:21,674 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:00:21,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:00:21,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:00:21,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:00:21,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:00:21,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:00:21,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:00:21,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:00:21,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:00:21,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:00:21,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:00:21,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:00:21,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:00:21,683 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:00:21,683 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:00:21,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:00:21,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2022-10-17 11:00:21,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:00:21,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:00:21,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:00:21,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:00:21,961 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:00:21,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2022-10-17 11:00:22,027 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/data/2675cc5b5/aec6442ca5454ce5bde3be0c5db9ae28/FLAG7ac14e587 [2022-10-17 11:00:22,784 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:00:22,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2022-10-17 11:00:22,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/data/2675cc5b5/aec6442ca5454ce5bde3be0c5db9ae28/FLAG7ac14e587 [2022-10-17 11:00:22,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/data/2675cc5b5/aec6442ca5454ce5bde3be0c5db9ae28 [2022-10-17 11:00:22,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:00:22,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:00:22,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:00:22,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:00:22,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:00:22,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:00:22" (1/1) ... [2022-10-17 11:00:22,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ade1906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:22, skipping insertion in model container [2022-10-17 11:00:22,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:00:22" (1/1) ... [2022-10-17 11:00:22,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:00:23,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:00:23,492 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2022-10-17 11:00:23,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2022-10-17 11:00:23,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:00:23,780 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:00:23,822 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2022-10-17 11:00:24,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2022-10-17 11:00:24,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:00:24,075 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:00:24,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24 WrapperNode [2022-10-17 11:00:24,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:00:24,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:00:24,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:00:24,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:00:24,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,298 INFO L138 Inliner]: procedures = 177, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3019 [2022-10-17 11:00:24,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:00:24,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:00:24,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:00:24,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:00:24,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,480 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:00:24,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:00:24,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:00:24,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:00:24,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (1/1) ... [2022-10-17 11:00:24,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:00:24,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:24,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:00:24,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:00:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:00:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 11:00:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 11:00:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:00:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 11:00:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 11:00:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 11:00:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:00:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 11:00:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:00:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 11:00:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 11:00:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:00:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:00:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:00:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:00:24,832 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:00:24,834 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:00:27,714 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:00:27,731 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:00:27,731 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-10-17 11:00:27,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:00:27 BoogieIcfgContainer [2022-10-17 11:00:27,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:00:27,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:00:27,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:00:27,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:00:27,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:00:22" (1/3) ... [2022-10-17 11:00:27,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314e435f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:00:27, skipping insertion in model container [2022-10-17 11:00:27,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:24" (2/3) ... [2022-10-17 11:00:27,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314e435f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:00:27, skipping insertion in model container [2022-10-17 11:00:27,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:00:27" (3/3) ... [2022-10-17 11:00:27,744 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test9-2.i [2022-10-17 11:00:27,763 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:00:27,763 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 11:00:27,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:00:27,860 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1bc35ac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:00:27,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 11:00:27,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 1196 states, 688 states have (on average 1.9127906976744187) internal successors, (1316), 1190 states have internal predecessors, (1316), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-10-17 11:00:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 11:00:27,877 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:27,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:27,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:27,883 INFO L85 PathProgramCache]: Analyzing trace with hash -858764483, now seen corresponding path program 1 times [2022-10-17 11:00:27,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:27,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131216036] [2022-10-17 11:00:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:27,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:28,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:28,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131216036] [2022-10-17 11:00:28,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131216036] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:28,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:28,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:00:28,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143901888] [2022-10-17 11:00:28,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:28,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:00:28,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:28,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:00:28,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:00:28,156 INFO L87 Difference]: Start difference. First operand has 1196 states, 688 states have (on average 1.9127906976744187) internal successors, (1316), 1190 states have internal predecessors, (1316), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:28,365 INFO L93 Difference]: Finished difference Result 2390 states and 5142 transitions. [2022-10-17 11:00:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:00:28,371 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-17 11:00:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:28,426 INFO L225 Difference]: With dead ends: 2390 [2022-10-17 11:00:28,426 INFO L226 Difference]: Without dead ends: 1163 [2022-10-17 11:00:28,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:00:28,447 INFO L413 NwaCegarLoop]: 2253 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:28,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:00:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-10-17 11:00:28,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2022-10-17 11:00:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 656 states have (on average 1.833841463414634) internal successors, (1203), 1157 states have internal predecessors, (1203), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-10-17 11:00:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2209 transitions. [2022-10-17 11:00:28,959 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2209 transitions. Word has length 9 [2022-10-17 11:00:28,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:28,960 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 2209 transitions. [2022-10-17 11:00:28,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:28,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2209 transitions. [2022-10-17 11:00:28,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 11:00:28,963 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:28,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:28,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:00:28,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:28,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash -293931519, now seen corresponding path program 1 times [2022-10-17 11:00:28,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:28,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863196707] [2022-10-17 11:00:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:28,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:29,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:29,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863196707] [2022-10-17 11:00:29,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863196707] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:29,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:29,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:00:29,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115833012] [2022-10-17 11:00:29,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:29,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:00:29,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:29,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:00:29,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:00:29,510 INFO L87 Difference]: Start difference. First operand 1163 states and 2209 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:30,787 INFO L93 Difference]: Finished difference Result 3333 states and 6429 transitions. [2022-10-17 11:00:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:00:30,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-10-17 11:00:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:30,813 INFO L225 Difference]: With dead ends: 3333 [2022-10-17 11:00:30,814 INFO L226 Difference]: Without dead ends: 2264 [2022-10-17 11:00:30,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:00:30,828 INFO L413 NwaCegarLoop]: 2672 mSDtfsCounter, 1128 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 6983 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:30,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 6983 Invalid, 645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 11:00:30,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2022-10-17 11:00:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1165. [2022-10-17 11:00:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 658 states have (on average 1.831306990881459) internal successors, (1205), 1159 states have internal predecessors, (1205), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-10-17 11:00:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 2211 transitions. [2022-10-17 11:00:31,248 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 2211 transitions. Word has length 44 [2022-10-17 11:00:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:31,248 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 2211 transitions. [2022-10-17 11:00:31,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 2211 transitions. [2022-10-17 11:00:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 11:00:31,253 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:31,253 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:31,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:00:31,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:31,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1509497837, now seen corresponding path program 1 times [2022-10-17 11:00:31,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:31,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298977561] [2022-10-17 11:00:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:31,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:31,403 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:00:31,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209873001] [2022-10-17 11:00:31,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:31,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:31,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:31,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:00:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:32,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:00:32,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:00:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:32,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:00:32,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:32,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298977561] [2022-10-17 11:00:32,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:00:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209873001] [2022-10-17 11:00:32,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209873001] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:32,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:32,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:00:32,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676952742] [2022-10-17 11:00:32,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:00:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:00:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:00:32,149 INFO L87 Difference]: Start difference. First operand 1165 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:32,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:32,281 INFO L93 Difference]: Finished difference Result 2347 states and 4449 transitions. [2022-10-17 11:00:32,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:00:32,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-10-17 11:00:32,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:32,293 INFO L225 Difference]: With dead ends: 2347 [2022-10-17 11:00:32,293 INFO L226 Difference]: Without dead ends: 1186 [2022-10-17 11:00:32,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:00:32,304 INFO L413 NwaCegarLoop]: 2189 mSDtfsCounter, 9 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:32,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4363 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:00:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-10-17 11:00:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1185. [2022-10-17 11:00:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 678 states have (on average 1.8067846607669618) internal successors, (1225), 1179 states have internal predecessors, (1225), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-10-17 11:00:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 2231 transitions. [2022-10-17 11:00:32,535 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 2231 transitions. Word has length 96 [2022-10-17 11:00:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:32,536 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 2231 transitions. [2022-10-17 11:00:32,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 2231 transitions. [2022-10-17 11:00:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 11:00:32,539 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:32,539 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:32,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-17 11:00:32,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:32,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:32,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1482432235, now seen corresponding path program 1 times [2022-10-17 11:00:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:32,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115964610] [2022-10-17 11:00:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:32,905 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:00:32,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750635452] [2022-10-17 11:00:32,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:32,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:32,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:32,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:32,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 11:00:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:33,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:00:33,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:00:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:00:33,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:00:33,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:33,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115964610] [2022-10-17 11:00:33,711 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:00:33,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750635452] [2022-10-17 11:00:33,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750635452] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:33,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:33,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:00:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690312357] [2022-10-17 11:00:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:33,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:00:33,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:00:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:00:33,718 INFO L87 Difference]: Start difference. First operand 1185 states and 2231 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:33,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:33,847 INFO L93 Difference]: Finished difference Result 2274 states and 4348 transitions. [2022-10-17 11:00:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:00:33,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-10-17 11:00:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:33,860 INFO L225 Difference]: With dead ends: 2274 [2022-10-17 11:00:33,861 INFO L226 Difference]: Without dead ends: 1206 [2022-10-17 11:00:33,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:00:33,869 INFO L413 NwaCegarLoop]: 2191 mSDtfsCounter, 8 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:33,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4365 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:00:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-10-17 11:00:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1205. [2022-10-17 11:00:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 698 states have (on average 1.7836676217765044) internal successors, (1245), 1199 states have internal predecessors, (1245), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-10-17 11:00:34,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 2251 transitions. [2022-10-17 11:00:34,120 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 2251 transitions. Word has length 96 [2022-10-17 11:00:34,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:34,121 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 2251 transitions. [2022-10-17 11:00:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:34,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 2251 transitions. [2022-10-17 11:00:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 11:00:34,127 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:34,128 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:34,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:00:34,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:34,357 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:34,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1801417811, now seen corresponding path program 1 times [2022-10-17 11:00:34,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:34,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588424354] [2022-10-17 11:00:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:34,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:34,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:00:34,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164698172] [2022-10-17 11:00:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:34,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:34,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:34,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:34,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 11:00:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:35,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:00:35,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:00:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:35,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:00:35,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:35,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588424354] [2022-10-17 11:00:35,318 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:00:35,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164698172] [2022-10-17 11:00:35,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164698172] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:35,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:35,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:00:35,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412267465] [2022-10-17 11:00:35,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:35,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:00:35,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:00:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:00:35,321 INFO L87 Difference]: Start difference. First operand 1205 states and 2251 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:35,475 INFO L93 Difference]: Finished difference Result 2398 states and 4490 transitions. [2022-10-17 11:00:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:00:35,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-10-17 11:00:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:35,486 INFO L225 Difference]: With dead ends: 2398 [2022-10-17 11:00:35,486 INFO L226 Difference]: Without dead ends: 1197 [2022-10-17 11:00:35,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:00:35,494 INFO L413 NwaCegarLoop]: 2189 mSDtfsCounter, 1182 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 4886 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:35,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 4886 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:00:35,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-10-17 11:00:35,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1191. [2022-10-17 11:00:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 684 states have (on average 1.7894736842105263) internal successors, (1224), 1185 states have internal predecessors, (1224), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-10-17 11:00:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2230 transitions. [2022-10-17 11:00:35,721 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2230 transitions. Word has length 96 [2022-10-17 11:00:35,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:35,721 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2230 transitions. [2022-10-17 11:00:35,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2230 transitions. [2022-10-17 11:00:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 11:00:35,728 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:35,729 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:35,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 11:00:35,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:35,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:35,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:35,943 INFO L85 PathProgramCache]: Analyzing trace with hash 432450363, now seen corresponding path program 1 times [2022-10-17 11:00:35,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:35,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366403510] [2022-10-17 11:00:35,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:35,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:36,080 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:00:36,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468965625] [2022-10-17 11:00:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:36,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:36,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:36,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:36,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 11:00:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:36,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 11:00:36,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:00:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:00:36,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:00:36,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:36,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366403510] [2022-10-17 11:00:36,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:00:36,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468965625] [2022-10-17 11:00:36,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468965625] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:36,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:36,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:00:36,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759285975] [2022-10-17 11:00:36,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:36,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:00:36,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:36,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:00:36,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:00:36,992 INFO L87 Difference]: Start difference. First operand 1191 states and 2230 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:38,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:38,206 INFO L93 Difference]: Finished difference Result 2271 states and 4328 transitions. [2022-10-17 11:00:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:00:38,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-10-17 11:00:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:38,217 INFO L225 Difference]: With dead ends: 2271 [2022-10-17 11:00:38,218 INFO L226 Difference]: Without dead ends: 1183 [2022-10-17 11:00:38,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:00:38,225 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 1070 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:38,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 6016 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 11:00:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-10-17 11:00:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1177. [2022-10-17 11:00:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 670 states have (on average 1.7955223880597015) internal successors, (1203), 1171 states have internal predecessors, (1203), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-10-17 11:00:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 2209 transitions. [2022-10-17 11:00:38,422 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 2209 transitions. Word has length 96 [2022-10-17 11:00:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:38,422 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 2209 transitions. [2022-10-17 11:00:38,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:38,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 2209 transitions. [2022-10-17 11:00:38,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 11:00:38,424 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:38,424 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:38,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 11:00:38,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:38,646 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:38,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:38,646 INFO L85 PathProgramCache]: Analyzing trace with hash -725158097, now seen corresponding path program 1 times [2022-10-17 11:00:38,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:38,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770410371] [2022-10-17 11:00:38,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:38,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:38,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:00:38,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579881688] [2022-10-17 11:00:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:38,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:38,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:38,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:38,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 11:00:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:39,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 11:00:39,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:00:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:00:39,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:00:39,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:39,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770410371] [2022-10-17 11:00:39,960 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:00:39,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579881688] [2022-10-17 11:00:39,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579881688] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:39,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:39,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:00:39,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162253752] [2022-10-17 11:00:39,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:39,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:00:39,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:39,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:00:39,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:00:39,963 INFO L87 Difference]: Start difference. First operand 1177 states and 2209 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:40,234 INFO L93 Difference]: Finished difference Result 3446 states and 6522 transitions. [2022-10-17 11:00:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:00:40,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-10-17 11:00:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:40,257 INFO L225 Difference]: With dead ends: 3446 [2022-10-17 11:00:40,257 INFO L226 Difference]: Without dead ends: 2273 [2022-10-17 11:00:40,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:00:40,266 INFO L413 NwaCegarLoop]: 2736 mSDtfsCounter, 1065 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:40,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 4909 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:00:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2022-10-17 11:00:40,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2271. [2022-10-17 11:00:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1264 states have (on average 1.8259493670886076) internal successors, (2308), 2265 states have internal predecessors, (2308), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-10-17 11:00:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 4314 transitions. [2022-10-17 11:00:40,769 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 4314 transitions. Word has length 96 [2022-10-17 11:00:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:40,769 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 4314 transitions. [2022-10-17 11:00:40,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:40,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 4314 transitions. [2022-10-17 11:00:40,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-10-17 11:00:40,771 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:40,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:40,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 11:00:40,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 11:00:40,985 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:40,986 INFO L85 PathProgramCache]: Analyzing trace with hash -892194403, now seen corresponding path program 1 times [2022-10-17 11:00:40,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:40,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094615001] [2022-10-17 11:00:40,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:40,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:41,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:00:41,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790478906] [2022-10-17 11:00:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:41,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:41,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:41,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:41,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 11:00:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:41,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 11:00:41,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:00:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 11:00:41,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:00:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:41,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094615001] [2022-10-17 11:00:41,929 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:00:41,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790478906] [2022-10-17 11:00:41,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790478906] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:41,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:41,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:00:41,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973616611] [2022-10-17 11:00:41,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:41,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:00:41,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:00:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:00:41,934 INFO L87 Difference]: Start difference. First operand 2271 states and 4314 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:00:43,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:43,425 INFO L93 Difference]: Finished difference Result 3444 states and 6519 transitions. [2022-10-17 11:00:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:00:43,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-10-17 11:00:43,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:43,445 INFO L225 Difference]: With dead ends: 3444 [2022-10-17 11:00:43,446 INFO L226 Difference]: Without dead ends: 1221 [2022-10-17 11:00:43,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:00:43,457 INFO L413 NwaCegarLoop]: 2198 mSDtfsCounter, 2254 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:43,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 3269 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 11:00:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-10-17 11:00:43,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1221. [2022-10-17 11:00:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 714 states have (on average 1.7507002801120448) internal successors, (1250), 1215 states have internal predecessors, (1250), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-10-17 11:00:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 2256 transitions. [2022-10-17 11:00:43,740 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 2256 transitions. Word has length 111 [2022-10-17 11:00:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:43,741 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 2256 transitions. [2022-10-17 11:00:43,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:00:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 2256 transitions. [2022-10-17 11:00:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-17 11:00:43,743 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:43,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:43,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 11:00:43,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-17 11:00:43,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:43,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1386255789, now seen corresponding path program 1 times [2022-10-17 11:00:43,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:43,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974082572] [2022-10-17 11:00:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:44,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:00:44,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079521698] [2022-10-17 11:00:44,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:44,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:44,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:44,020 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:44,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e7e17c-0e4c-4680-99e3-0af1451ed68c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process